Yup. Radio Shack for some mono-male-1/4 inch plugs. The big E-V's in my garage use RCA input plugs. Make sure you get two MONO plugs, not two stereo ones. Do all that soldering and then get that wicked 60 cycle hum if you get the stereo ones. I think Parts Express has some on sale right now that have big, fat openings for the speaker cable, which will allow you to use a good 14 gauge cable and maybe even fatter.
Toasted Almond